Chapter 3.1 - VHF Radio Communications Flashcards
What does RTF stand for?
Radiotelephony.
Define RTF?
A system of transmitting and receiving voice messages by Radio.
What does VHF stand for?
Very High Frequency.
What does HF stand for?
High Frequency.
True or False. A Pilot would need a license to operate an Aircraft Radio?
True.
Name 4 unauthorised Transmissions when operating the Radio?
- Use of obscene language.
- False information or intent to deceive.
- Personal/Private nature.
- Involving the improper use of another Aircraft’s Callsign.
True or False. Radio is a requirement for VFR?
True.
VHF Communication is required in which Airspace?
Class C, D, E and G.
VHF Communication is required outside controlled Airspace at what altitude?
5000ft AMSL or above.
True or False. VHF Communication is not required at non-towered Aerodromes?
False.
VHF Communication is required outside controlled Airspace below 3000ft AMSL or 1000ft above terrain in which conditions?
Reduced Visual Meteorological Conditions (VMC).
True or False. For all VFR operating in Class C, D (CTRs) and E Airspace a continuous listening watch is required?
True.
True or False. An Aircraft operating in Class G Airspace at 5000ft AMSL or above requires a continuous listening watch?
True.
True or False. For Aircraft operating in Class G airspace below 5000ft AMSL is required for a Pilot to maintain continuous listening watch?
False. But is recommended in the interest of safety.
What is the Standard International Frequency unit for Radio Waves?
Hertz (Hz).
What is the VHF Frequency used for aviation communication?
Megahertz (MHz).
VHF Communication Frequency ranges between?
118.0 MHz – 136.0 MHz.
Which two factors can affect the quality of VHF Transmission?
- Distance.
- Obstruction.
How can a Pilot increase the range of VHF Communication?
By increasing Altitude.
A Radiotelephone has two main components?
- Transmitter.
- Receiver.
Name 3 types of VHF Aerials?
- Blade-type.
- Rod-type.
- Combination COM/NAV.
Name the Cockpit Controls for a Radio (3)?
- Selection Panel.
- Transmit Button.
- Speaker/Phone Switch.
Name the controls of a Selection Panel in a Radio (4)?
- ON/OFF Switch.
- Volume Control.
- Frequency Selector.
- Squelch Control
Name the 3 position functions for a Radio designed with automatic Squelch Control?
- OFF.
- ON (Power).
- TEST.
Name the 2 position functions for a Radio designed with manual Squelch Control?
- ON.
- OFF.
Before switching on the Radio, a Pilot must ensure what is turned on?
Master Switch.
Name 2 methods in using the Transmit Button?
- Push-to-Talk Switch on the Control Wheel.
- Button on Microphone.
True or False. A Pilot can receive Transmission whilst pressing the Transmit Button?
False.
What is a Squelch Control?
A control to filter out unwanted background noise (static).
The Radio Set receives its power from the Aircraft’s Electrical System via what?
Master Switch.
How are all communication powered by?
Engine-driven Alternator.
It is essential for a Pilot to check what regularly during flight?
Output of the Alternator.
If the Alternator fails, communication equipment can be operated through what?
Emergency Power Source (Battery).
True or False. Radio impose a heavy drain on Battery?
True.
All communication equipment is protected by what?
Fuses/Circuit Breakers.
Name the sequence for operating a Radio (6)?
- Check Battery Master Switch/Avionics Switch are ON.
- Check Microphone and Headphones are plugged in correctly.
- Switch Radio ON and adjust Squelch Control.
- Select desired Radio on Audio Panel and set Speaker or Phone.
- Select desired Frequency.
- Adjust Volume.
Name 5 good VHF-COM tips?
- Make sure Frequency is clear and working.
- Think about your message beforehand.
- Use good Microphone Technique.
- Use standard Phraseology.
- Request repeat by saying ‘Say Again’ if necessary.
